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Finding the Fourth Proportional to 186,543.60, 279,712.80 and 127,446

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Solution

The fourth proportional to 186,543.60, 279,712.80 and 127,446 is: 191,098.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,543.60 : 279,712.80 = 127,446 : x
  2. Step 2: Convert to fraction form
    186,543.60/279,712.80 = 127,446/x
  3. Step 3: Cross multiply
    186,543.60x = 279,712.80 × 127,446
  4. Step 4: Simplify right side
    186,543.60x = 35,648,277,508.80
  5. Step 5: Solve for x
    x = 35,648,277,508.80/186,543.60
  6. Step 6: Final answer
    x = 191,098.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.